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Orbital Sciences Corp. said it will delay the test flight of its Cygnus cargo spacecraft until September. The automated cargo carrier is designed to deliver supplies to the International Space Station under NASA's Commercial Orbital Transportation Services program.

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NASA cleared Orbital Sciences Corp. to send an unmanned spacecraft to the International Space Station. Orbital Sciences is the second commercial firm to receive clearance to deliver cargo to the station, joining private firm SpaceX. Orbital Sciences is scheduled to launch a test flight of its Cygnus spacecraft on Wednesday.

Orbital Sciences plans to launch the Cygnus spacecraft on its first test flight to the International Space Station in September. The cargo ship will launch atop the Antares rocket, and could become a regular staple for cargo deliveries for NASA.

The Pentagon said the Chinese government is involved in cyberattacks against the U.S. to steal information from companies and federal agencies. The Defense Department has previously said that the attacks originated in China, but stopped short of implicating the Chinese government.

A software update will address issues on battery chargers on the U.S. Air Force GPS IIF satellite, officials said. During testing, the battery chargers "were experiencing current drop-outs," according to officials. Boeing, which manufactures the GPS IIF satellite, declined to comment.

SpaceX's Dragon capsule had a successful return to Earth this week, carrying almost 2,668 pounds of experiment samples and other cargo home to waiting scientists. The capsule, which splashed down in the Pacific, delivered its contents safely, SpaceX said. This summer, Orbital Sciences plans to launch its Cygnus spacecraft on its International Space Station mission.